9444459897856 has 99 divisors (see below), whose sum is σ = 19045679838787. Its totient is φ = 4681073868800.

The previous prime is 9444459897841. The next prime is 9444459897907. The reversal of 9444459897856 is 6587989544449.

The square root of 9444459897856 is 3073184.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2117607040000 + 7326852857856 = 1455200^2 + 2706816^2 .

It is a Duffinian number.

Its product of digits (12541132800) is a multiple of the sum of its prime divisors (840).

It is a self number, because there is not a number n which added to its sum of digits gives 9444459897856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13472838306 + ... + 13472839006.

Almost surely, 2^{9444459897856} is an apocalyptic number.

9444459897856 is the 3073184-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9444459897856

9444459897856 is an abundant number, since it is smaller than the sum of its proper divisors (9601219940931).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9444459897856 is an frugal number, since it uses more digits than its factorization.

9444459897856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696 (or 840 counting only the distinct ones).

The product of its digits is 12541132800, while the sum is 82.

The spelling of 9444459897856 in words is "nine trillion, four hundred forty-four billion, four hundred fifty-nine million, eight hundred ninety-seven thousand, eight hundred fifty-six".